Glass-press.



iNo. 815,180. v f y l PATBNTED MAR. 13, 1906.v '11..v B. KOBHLER a c. L. BBTZ.-

GLASS PRESS.

I APPLIOATIOK FILED kNOV; 26, 1904.

(Timun-N013 MM, @3% WW (Zm/w 62?? UNITED STATES i PATENT lorries.

VHauer e. KOEHLER AND .CHARLES L.- BETZ, or RocHEsTER, rinnvsvLfl f VANIA.

vGLA ss-PRESS.

Patented March 13, 1906.

To a/ZZ whom .it may concer-n:

Be it known that We, HENRY B.y KOEHLER and CHARLES L. BETZ, citizens of the United States, residing at Rochester, in the county of Beaver and State 'of-Pennsylvania, have invented certain new land useful Improvements in -Glass-Presses, .of which the following vis a specification, reference being had therein -to the accompanying drawings.

.Ourinvention relates to .presses formold-v ingglass articlesof various .lnndaparticularly those of .cup shape, and has for its object to produce 4a power or motor driven press that will not Iloe strained should too large a mass, of 4glass be placed in the mold, a contingency l that is often met with in the operationof apparatus of the kindto which our invention relates, andto secure -other'advantages, as will be hereinafter pointed out.

Figure 1 isa front .elevationofapress.em-

bodying our improvements. Fig. 2 is a side view of the-same.

The ypress is lmounted .upon -a wheeled truck 2., on the top -of which .is .supported amold '3. A framework 'comprising a pair .of :uprights 4 and a cross-bar 5 rises'from the frameabove the mold, and on the Vuprights of this frame is mounted and .reciprocates the cross-head 6. The plunger 8 is .connected with the crosshead by ,means ofthe rod of shaft 7 and is v arranged to enter the lcavity inthe -fmold `3 when the cross-head `androii 7 are depressed. A spring-held face-.plate -9 surrounds --the plunger and gives shape ato ythe edge I of the varticle'being molded..

The parts thus ,far described are of ,-a common and well-known construction, and no claim to ,novelty is made .for any of them.

In the side pieces ,ofcthe ltruck there is mounted a rotating. shaft 10nea'r each .end

of Whichshaft ismounted .theiXed member of a fricton ydevice,consisting, yby preference, of -a cone-shaped friction-wheel 1 1 keyed Yto :the

shaft. With each wheel v1 1 there cooperates anotherv friction wheel 12, .loosely mounted on'the shaft and having arecessshapedftoreceive and engage with the l`friction-face'of the i wheel 1l. 4Eacfhof the wheels 1 2 is arranged -to receive power :from any suitable source, they being represented in the ydrawlin s -as provided withspur-teeth with which driving vvspur-Wheels (not shown) arev adapted to engage. Each of the members 11 lof theclutch` or friction device is provided with. a wrist-.pin

vor approved construction.

.suming that just t has 'been introduced into the mold-cavity or,

The two clutch members y11 12iare held in Ifrictional engagement by means of suitable clamping devices, which may be of any usual We have represented them as each consistin of a frictionwasher 16, arranged between :t e kloose clutch member 12 :and a nut 15, mounted upon a screw-threaded portion of the shaft 10. By adjusting vtheclamping devices we .can insure that the two friction members 11 and the connectingshaft 10 shall turn with the driven friction-Wheels 12 until the-resistance offered `by the Iengagement of the plunger with -the lmass of glassinserted in the mold :becomes too great, which should be at the instant the glass article is properly molded, after which the Wheels 11 and the parts connected therewithv will be stopped, the frictional engagingsurfaces permitting the driven .parts of the press should the cut of molten glass inserted in the mold be too great, for as soon 4,as the plungerhas entered the mold and the dfaceplate 19 comes into engagement with the :edge ofthe molded glass vthe pressure developed willbe so great as to cause slip ing 'between :the engaging frictional faces o the -members l 1 12.

When o erating resses of this character, it isdesira le that t e plunger shall remain in the mold and .in en agement with ythe molded article sufficientlyv ong kto ermit the glass to se.v Qur press isdevise to insure this resut. intersects :the vertical plane in which kthe wristpin 13 moves,from which it follows that the Wheel -11 cannot make quite a ,half-revolution from' the gposition occupied by the parts `when .the plunger is most elevated byv reason of the engagement of the rods 14 with the `shaft 10. This engagement takes place when the molding o erationis completed, vaslie right amount of glass if the parts be so adjusted, when a somewhat It will be observed that the shaft 10 less Iamount of glass than is desired is placed inthe mold. It will thus be seen that .in any event the plunger .after having entered the mold and shaped the glass article is stopped and held in engagement with the article while forward movements of the driven parts continue.

In order to withdraw the plunger from the mold, we have devised the following mechanism: 17 is a crank or wrist pin extending outward from the driven member 12. of the clutch. Between this crank or wrist pin and the cross-head 6 extends a connecting-rod or pitman 18, the upper end of which is formed into a loop 19, that surrounds a portion of the cross-head. The radial distance of the crank or wrist pin 17 from the axis of the shaft 10 should be the same as is that of the crank or Wrist pin 13, so that when these two pins are in line with each other the movements of the pitmen or connecting-rods 14 and 18 will be synchronous so long as the wheels 11 12 move together. rI`he loop portion 19 of the connecting-rod 18 should be so constructed that when the two wrist-pins 13 17 are in aline.- ment with each other the bottom edge of the bounding-wall of the loop is in engagement with the cross-head 6.

The operation of the apparatus may now be stated, assuming the parts to be in the position indicated in the=figures of the drawings-that is, with the plunger raised to its highest point-and that the operator has placed in the mold-cavity 3 a cut of molten glass slightly in excess of that required for making the article being molded. The rotationof the wheels 11 by reason of the frictional engagement therewith of the wheels 12 causes the parts of the machine to be moved forward and the plunger to be inserted into the mold. It will be noticed that as the wheels turn and draw downward the pitmen their movements are synchronous, but that only the pitmen 14 are operating to move the cross-head 6 and itsconnected parts. As soon as the molding operation is effected, which takes place when the face-plate 9 has given shape to the edge of the article, further movements of the plunger, cross-head, frictionwheels 11, and shaft 10 cease. The wheels 12 will, however, continue to advance, being positively driven from the motor 3 but while they impart no forward motion to the friction-wheels 11 they operate tohold them, and through them the plunger, in the position these parts occupy when they come to rest. Under the conditions mentioned the arresting of the frictionallydriven parts takes place just before the pitmen 14 come into engagement with the shaft 10. The continued advance of the wheels 12 carries forward the pitmen 18, the loop portions 19 thereof sliding upon the cross-head 6. After the pitmen 18 have passed the shaft 10, which they are i free to do, being outside the ends thereof, and

have commenced their upward movement the lower ends of the loops 19 come into engagement with the cross-head 6 and being positively driven lift the cross-head and its connected parts to its upmost position. In so doing the pitmen 14 are raised and the wheels 11 and shaft 1() turned backward, the wheels 11 and 12 now turning in opposite directions, until the two wristpins 13 17 come in line with each other, which takes place the moment their axes come into the vertical plane of the axis of the shaft 10. Further forward movements of the wheels 12 from this position causes a corresponding forward movement of the wheels 11, when the cycle of movements just described is repeated.

We have illustrated but one method of carrying out our invention, but do not wish to be restricted thereto in its useful applications, as modifications and changes will suggest themselves to those skilled in the art.

What we claim is-- 1. In a press adapted for molding glass articles, the combination of a mold, a plunger, means for forcing the plunger into the mold including a friction device arranged to permit a slipping of the parts if the resistance to the forward movement of the plunger becomes too great, and positively-driven means for withdrawing the plunger from the mold, substantially as set forth.

2. In a press adapted to mold glass articles, the combination of a mold, a plunger, power-driven gearing, connections between the plunger and the power-driven gearing, and friction-driven means for causing a dwel or rest of the plunger after it has entered the mold and shaped the article, substantially as set forth.

3. In a molding apparatus adapted to forni glass articles, the combination of a mold, a plunger, power-driven gearing, connections between the power-driven gearing and the plunger, including friction inembers, and means for causing lthroughout a portion of the cycle of movements of the parts a stoppage of that friction member that is connected with the plunger while the other friction member continues to move with the powerdriven gearing, whereby the plunger is caused to come to rest while within the mold, substantially as set forth.

4. In a molding apparatus adapted to form glass articles, the combination of a mold, a reciprocating plunger, power-driven gearing, connections between the power-driven gearing and the plunger for forcing the latter into the mold, including friction members arranged to permit the plunger to come to rest after having entered the mold, and means connected with the power-driven gearing for withdrawing the plunger from the mold, substantially as set forth.

5. In a press, the combination of a mold, a plunger, a cross-head in which the plunger is mounted, two wheels having frictional connection, one being power-driven, a pitman or IOO ros

.connecting-rod between one of the wheelsrodV between the other wheel and the crosshead for withdrawing the plunger from'the mold, substantially as set forth.l

p 6. In a press, the combination of a mold, a

plunger, a cross-head in which the plunger is mounted, means for driving the cross-,head to force the plunger into the mold'and for holding it therein, and other means for moving the said cross-head to Withdraw the plunger fromthe mold and for restoring its driving means to an initial position, substantially as set forth. i

7. In a press, the combination of a mold, a plunger, a cross-head in which the plunger is mounted, a wheel, a pitman connecting the wheel and the cross-head, means for turning the Wheel to cause the plunger to move into the mold, means` for arresting the movement of the wheel, and means for causing a backward movement of the wheel to withdraw the plunger from the mold, substantially as set forth.

8. In a press, the combination of a mold, a 4

plunger, a cross-head in Which the plunger is mounted, a pair of wheelsmounted upon a common axis, each wheel being connected with the cross-head by van independent connecting-rod, and means for causing one wheel and its connecting-rod to aot upon the crosshead to move the plunger into the mold, and

' for causing -the other wheel and its connecting-rod to move the cross-head to Withdraw the plunger from the mold, substantially as set forth.

9. In a press, the combination of a mold, a plunger, a cross-head in which the plunger is mounted, a rotary shaft, a wheel mounted on said shaft and provided with a crank-pin, a connecting-rod between such crank-pin and the cross-head, the connecting-rod being so arranged that the plane in which it moves 1n tersects the shaft on which the wheel is mountled, whereby the shaft operates as a stop to arrest the movement of the parts, means for moving the Wheel to cause the plunger `to enter the mold, such means being arranged to be arrested when the resistance .increases beyond a certain amount, and means for restoring the parts to an initial position, substantially as set forth.

10. In a press, the combination of a mold, a cross-head, a plunger carried thereby, a rotary shaft, a pair of wheels mounted on the shaft, one being loose andthe other fast relative thereto, the wheels having friotional engaging surfaces, and one being power-driven, a connecting-rod between one of the wheels and the cross-head for moving the plunger into its mold, the connecting-rod being so arranged that its plane of movement intersects the shaft, and another connecting-rod between the other Wheeland the cross-head arranged to restore the cross-head, its plunger, the other wheel and its connecting-rod to initial positions, substantially as set forth.

11. In a press, the combination of a cross- 11, 12,- mounted thereon, one bein fast on the shaft and the other loose, and t e 4wheel 12 being power-driven, means for holding thel wheels in frictional engagement with each other, a connecting-rod 14 between the wheel 11 and the cross-head, the connecting-rod being so arranged that its plane of movement intersects. the shaft 10, and a connecting-rod 18 between the wheel 12 and the cross-head, the end of this connecting-rod that engages with the cross-head bein provided with a loop or slot 19, substantia ly as set forth. y

In testimony whereof we affix our signatures in presence of two Witnesses.

HENRY B. KOEHLER.

CHARLES LgBETZ. Witnesses: p

V. B. IRoNs, J .'A. IRoNs. 

